Free Energy. Calories For Electricity. Charging a Bank of Batteries with exercise Bike

[MrJetjoe]

use a electric bike

[Harwkins39]

The speeds probably won't help you since you are going to be pedaling hard anyway even in first gear

[MunkeySpaz]

Would you be able to hook this up to a mountain bike instead of an exorcise bike? The reason I ask is the mountain bikes have those speed settings which spin the crank at a higher speed while the rider has to give less energy. Thoughts?

[TheTim0109]

very cool! take a look at my video, concerning energy saving, too)

mutual liking is very much appreciated!

[ShahinGenerator]

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[supercalifrachidisi]

People misunderstand this application Alternator as the name say it all. The internal diodes transform DC to AC why to do this? All you effort is pointless unless you using an old VW Bug Generator it will be different Bcuz It won't Need to transform DC it's already AC Power 100%

[SirArmandoDw]

i don think you have enough rpm's pedaling a bicycle to make work the alternator...

[death7metal7girl7]

I -3 this vid---++++

[sbflash311]

You might also try power packs with jumper cables. You can then plug inverters into the power packs and appliances into the inverters.

[Harwkins39]

Alternators don't need diode protection since diodes are built into it.

[eric1970x]

@Harwkins39 But who wants to tear down an alternator to replace the diodes?

[eric1970x]

24 hrs to charge a 12v battery car battery? LOL, that's just about useless. 

[xxmexxmidnaxx123]

i was wondering have you put a diode on the autinator to stop the powere from the batteries from sending power back in to it .

ps: sorry for the bad spelling nice vid

[kindrixxx]

yeehaa 10wh

[UCGOevents]

if you add a small tire in between the alternator and bike you might get more power faster though you might have to pedal harder.

[pixar5]

yea its amazing you were able to wire up that car alt i have 2 of them and tryed to wire it up and no luck got fed up you need to be a meckanic or electrician to know what your doing with those car alt to get them working . after a few months bought a pma much more expensive but no headakes still need to hook up a batt as no amps come out of those alts good video

[MrJetjoe]

get a electric bike moter on there.

[robviolin1]

thanks for sharing.

[naciremad]

Homie!! that not how you do it

[Forsure3333]

OK... How long does it take to recharge a 12Volt car battery pedaling at a fast rate?

[Harwkins39]

@Forsure3333 I would say a full 24 hrs of pedaling should do it.

[christo930]

@Harwkins39 First, are you still doing this and peddling everyday? I don't see why it should take 24 hours of pedaling to charge a car battery. Most car batteries will only light a 100 watt bulb for 1 hour, so they have about 100 watt hours. An in shape man should be able to generate about 100 watts on a bike, so disregarding heat loss during charging, it's only about an hours worth of pedaling and if you are only going to 70%, the batteries are nearly 100% efficient.

[Harwkins39]

@christo930 With this setup I could maybe peak at 100W but certainly not maintain it. If I could average 1 or 2 amps in 20 min I was doing good. I'm in reasonably good shape. With some better mechanical transfer of energy I might be able to do a little better, but not much more.

[christo930]

@Harwkins39 I was figuring on maybe 50% of peak output maintained which would be about 2 hours worth of pedaling (disregarding charging inefficiencies). So you are getting 8 watt hours in 20 minutes? Lead acid batteries are fairly efficient at lower charges, but like other chemistries, drops precipitously when you get over 70% charged. It's so easy to forget how much energy electricity contains and that even a CF bub is hard to keep lit with human muscle power.

[spentacle]

@christo930 I'm not happy with your maths here. Batteries work in Amp Hours not watt hours. 100W at 12V is roughly 9 amps.A car battery of 72 amp hours ( as in my car ) will give 9 amps for 8 hours 9 * 8 = 72

Also if you just want a reading light you need a lot less than 100W ( car headlight down to 45W, and LEDS take bugger all)

[christo930]

@spentacle You don't understand this. Batteries are rated in amp hours because it is a useful way to compare batteries of the same voltage, but battery capacity is best stated in watt hours, because the voltage can be raised or lowered. Car batteries are NOT good at sustained low power output, but are designed for short bursts of 50 amps or more. Most car batteries will only keep a100watt bulb running for about an hour. You need "deep cycle" lead-acid batteries for long low loads.

[MucusFelidae]

@christo930 "100 watt hours"

My dieses car battery has 88 amp-hours at 12 volts nominal voltage, that adds up to 1056 Watthours, if yo do the calculation. A well trained sportsman can do

100 watt for about 20 minutes. You and me can only produce 1 third of that.

Now it's your turn to calculate.

[christo930]

@MucusFelidae Your diesel battery may be a deep-cycle battery, as many diesels use them to keep the glow plugs hot. Normal car batteries are designed to put out massive 600 watts or more (50 amps) for very short bursts needed to start the car. If you have a garage, leave the lights on and see how long your battery can power them. Batteries don't charge evenly. A battery will usually accept 1C and convert almost all of that to chemical storage, but as the battery gets around 70% is drops off.

[spentacle]

@christo930 Please get your units right. A car battery will give 600 AMPS for a short period to start, not watts. Also a car will NOT have a deep discharge battery as the glowplugs are only on for a few seconds, and the starting current will kill a deep discharge battery.

PS I have got 50 years experience of vehicle electrics and I have never seen watt-hours used before.

[christo930]

@spentacle Amp hours are meaningless, because power is voltage X amperage (though you're right in that batteries in general are rated in amps). A starter, to the best of my knowledge doesn't need 7200 watts (600 amps at 12 volts is 7200 watts)to turn over the engine. I really don't know a lot about diesels, so I concede I am probably wrong on that point. Do you disagree that typical car batteries will die in about an hour powering a 100 watt bulb (or 2 50 watt bulbs)?

[spentacle]

@christo930 Whether you like it or not, battery capacity is given in amp-hours (Ah) Go and look at any manufacturers website ( eg varta-automotive com). Watts is an instantaneous value, W=VxA but the amount used is given in watt-hours or kWh. I have just changed the battery on my van and it is clearly labelled 75Ah capacity, cold cranking amps 750. This is possible instant value when the starter is engaged on a cold engine. Look how thick the wires are between battery and starter

[christo930]

@spentacle Cold Cranking amps is different that the total energy in the battery, it just means that that battery is designed to put out a very high fraction (in this case a positive fraction) of it's charge rate. Put your in the garage and run the headlights until they dim, I assure you it won't be 9 hours (assuming the lights are combined 100 watt. This is the exact reason why deep cycle lead acid batteries exist in the first place.It would have to be 30 below to need 600Amp to start

[spentacle]

@christo930 I KNOW how long a battery will last. I have a shed used one month a year for lambing. It has 4 off 21W lights ( reversing lights) on an OLD car battery. 81W = 7amp. It usually lasts 4 to 5 hours before the battery is changed. These are batteries no ;longer able to start an engine. 65 AH rating. They can no longer give the HIGH starting current but still have some capacity.

[christo930]

@spentacle Maybe they have gotten better since the last time I handled them (late 90's).

[killer0bear]

@Forsure3333 it depends on how much u took out of the battery an how large your battery an Alternator size. General rule of thumb is the battery will accept 10% to 15% of the total amphours per hour but will decrease as the battery becomes charged. Chargeing rate also had to do with the RPM of the Alternator. Most Alternators require around 2000 RPM for max out put

[mgamber1]

This is great! Thanks for explaining the details of the wiring set up, particularly about exciting the diode. My issue is the car alternator i bought is bmw and only has two terminals, does not have the connection for the wire coming back from the exciter switch to the alternator. Do you think I ought to just go back to the positive terminal with it?

thanks for posting this

Mike

[Harwkins39]

@mgamber1 You may not have a energizer type of alternator. Maybe it's a permanent magnet alternator. If it generates voltage when you turn it, then that may be the case.

[zoni3]

@mgamber1 may be the exciter point will be connected in the body of alternater , or it may be a pma.. i think it will a p.m.a,,

@Harwkins39 plz tell me i have a 40 amp 12v alternater and i want to charge a 40 amp 12v car battery, so charging volt should be 14.5 and what should be current plz tell me, and how long it will take to charge??

[vox1philippines]

THIS IS PERFECT TO HAVE A GOOD HEALTH AND TO HAVE A FREE ENERGY ........

LINE TO MY NEXT PROJECT...

THANK YOU SIR.....

[lclos71]

Now I have an idea the next time my boys want to play xbox. I'll just have them charge up the bats. before play time

[Harwkins39]

@lclos71 Good idea. One can pedal while the other plays

[zoni3]

@Harwkins39 hahahahahah, yes great idea man :p

[caveman1968]

@lclos71 i actually done this with a 12 speed bike to power my laptop, figured if i was surfing the web i would gain weight (and i have) so this came to mind so i took an old chevy alternator and a motorcycle battery with a power inverter attached and got it going, i of course dont use it much like i should but it was a fun project. now i can tell all my friends and family i found more people like me to get more crazy ideas from :-)

[demonicsin11]

now this is something cool that I've been looking for :)

[Harwkins39]

@demonicsin11 The alternator in this set-up has been replaced with a permanent magnet motor. Puts out more power and a much better work-out.

[PROFILESophiaYates]

he watches everything I do!!!!!!!!

[St3Beyma]

dame of my idea but im using 1 air wind with 200amp altenator,batteries and inverter that sit

[Antiinequity]

nice idea

[EletrikRide]

cool :)